{"id":"CVE-2016-9954","aliases":["DEBIAN-CVE-2016-9954","EUVD-2016-10741","GHSA-3p97-hgvq-jvxr","UBUNTU-CVE-2016-9954"],"status":"published","title":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6...","description":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02422,"percentile":0.84288,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-399"],"published":"2017-04-21T20:00:00Z","modified":"2026-10-20T10:47:32Z","fixes":[{"ecosystem":"Debian:12","package":"chicken","fixed_in":["4.12.0-0.2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"chicken","fixed_in":["4.12.0-0.2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"chicken","fixed_in":["4.12.0-0.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"chicken","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.0-0.2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"chicken","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.0-0.2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"chicken","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.0-0.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"chicken","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.9.0.1-1"]}],"products":[{"vendor":"irregex_project","product":"irregex"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2016/12/15/8","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://github.com/ashinn/irregex/commit/a16ffc86eca15fca9e40607d41de3cea9cf868f1","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"http://www.securityfocus.com/bid/94942","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1413990","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory","VDB Entry","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9954"},{"url":"https://github.com/advisories/GHSA-3p97-hgvq-jvxr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-9954","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-9954","tags":["report"]},{"url":"https://www.openwall.com/lists/oss-security/2016/12/14/18","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-9954","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-9954","description":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.","status":"published","published":"2017-04-21T20:00:00Z","modified":"2024-08-06T03:07:31.17Z","updated_at":"2026-11-02T14:33:31.764001Z"}],"euvd":[{"id":"EUVD-2016-10741","description":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.","status":"published","published":"2017-04-21T20:00:00Z","modified":"2024-08-06T03:07:31Z","updated_at":"2026-11-03T02:22:25.833438Z"}],"ghsa":[{"id":"GHSA-3p97-hgvq-jvxr","title":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6...","description":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.","status":"published","published":"2022-05-17T02:48:12Z","modified":"2023-01-27T05:05:21Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:42:40.834674Z"}],"nvd":[{"id":"CVE-2016-9954","description":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.","status":"published","published":"2017-04-21T20:59:00.883Z","modified":"2026-06-17T00:56:49.77Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:03:37.619685Z"}],"osv":[{"id":"CVE-2016-9954","description":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.","status":"published","published":"2017-04-21T20:59:00.883Z","modified":"2026-10-20T10:47:32.876968929Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:03.472693Z"},{"id":"DEBIAN-CVE-2016-9954","description":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.","status":"published","published":"2017-04-21T20:59:00.883Z","modified":"2026-09-22T07:02:48.140284848Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:28.207321Z"},{"id":"UBUNTU-CVE-2016-9954","description":"The backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.","status":"published","published":"2017-04-21T20:59:00Z","modified":"2026-04-22T11:07:46.022463Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:13.356796Z"}]}}